ASTROSAT CZTI

Data Quality Report

Orbit 36368

Creation date: 2022-06-23T12:34:10.865583
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_097T24_9000005196_36368cztM0_level2.evt modeM0/AS1A11_097T24_9000005196_36368cztM0_level2_quad_clean.evt
Size (bytes)466,473,60072,100,800
Size444.9 MB 68.8 MB
Events in quadrant A2,899,787455,708
Events in quadrant B4,010,186449,182
Events in quadrant C3,020,375439,216
Events in quadrant D3,783,080413,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125403
B0159992
C0127702
D0154252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6083110.180832%
B60833255.342759%
C6083230.378103%
D60832013.304291%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8709 6085 3 3 0.03% 0.05%
B 8709 6085 271 271 3.11% 4.45%
C 8709 6085 16 16 0.18% 0.26%
D 8709 6085 211 211 2.42% 3.47%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 195567 1412.03 685 674 138.0
A 12 189 25829 182.25 685 674 138.0
A 10 255 15612 108.23 685 674 138.0
B 5 172 1190144 9254.68 666 650 128.5
B 4 232 77584 598.57 666 650 128.5
B 5 236 36715 280.59 666 650 128.5
C 15 214 261273 1691.04 660 663 154.1
C 0 10 119349 770.13 660 663 154.1
C 0 207 65296 419.39 660 663 154.1
D 12 6 633624 3970.41 652 633 159.4
D 13 249 248252 1553.18 652 633 159.4
D 2 250 97927 610.27 652 633 159.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter